Definition of stratum

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Stratum (n.) A bed of earth or rock of one kind, formed by natural causes, and consisting usually of a series of layers, which form a rock as it lies between beds of other kinds. Also used figuratively..

Lern More About Stratum

Pan :: Pan (n.) The hard stratum of earth that lies below the soil. See Hard pan, under Hard..
Outlier :: Outlier (n.) A part of a rock or stratum lying without, or beyond, the main body, from which it has been separated by denudation..
Rampart :: Rampart (n.) A broad embankment of earth round a place, upon which the parapet is raised. It forms the substratum of every permanent fortification..
Outcrop :: Outcrop (n.) The coming out of a stratum to the surface of the ground.
Rubble :: Rubble (n.) A mass or stratum of fragments or rock lying under the alluvium, and derived from the neighboring rock..
Seam :: Seam (n.) A thin layer or stratum; a narrow vein between two thicker strata; as, a seam of coal..
Superstruct :: Superstatum (n.) A stratum, or layer, above another..
Intercalate :: Intercalate (v. t.) To insert among others, as a verse in a stanza; specif. (Geol.), to introduce as a bed or stratum, between the layers of a regular series of rocks..
Scagliola :: Scagliola (n.) An imitation of any veined and ornamental stone, as marble, formed by a substratum of finely ground gypsum mixed with glue, the surface of which, while soft, is variegated with splinters of marble, spar, granite, etc., and subsequently colored and polished..
Underclay :: Underclay (n.) A stratum of clay lying beneath a coal bed, often containing the roots of coal plants, especially the Stigmaria..
Fahlband :: Fahlband (n.) A stratum in crystalline rock, containing metallic sulphides..
Hardpan :: Hardpan (n.) The hard substratum. Same as Hard pan, under Hard, a..
Stratum :: Stratum (n.) A bed of earth or rock of one kind, formed by natural causes, and consisting usually of a series of layers, which form a rock as it lies between beds of other kinds. Also used figuratively..
Uniform :: Uniform (a.) Having always the same form, manner, or degree; not varying or variable; unchanging; consistent; equable; homogenous; as, the dress of the Asiatics has been uniform from early ages; the temperature is uniform; a stratum of uniform clay..
Layer :: Layer (n.) That which is laid; a stratum; a bed; one thickness, course, or fold laid over another; as, a layer of clay or of sand in the earth; a layer of bricks, or of plaster; the layers of an onion..
Strike :: Strike (n.) The horizontal direction of the outcropping edges of tilted rocks; or, the direction of a horizontal line supposed to be drawn on the surface of a tilted stratum. It is at right angles to the dip..
Stratus :: Stratum (n.) A bed or layer artificially made; a course.
Turf :: Turf (n.) That upper stratum of earth and vegetable mold which is filled with the roots of grass and other small plants, so as to adhere and form a kind of mat; sward; sod..
Stratagem :: Strata (n.) pl. of Stratum.
Underlie :: Underlie (v. t.) To lie under; to rest beneath; to be situated under; as, a stratum of clay underlies the surface gravel..
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